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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79825278b202d27c1472fb32a4313a49efb93f6640b77e3017b03726ee2dddc1' 
  AND token = 'zhRt4/M3i6EHs7Rx+1E/Ggg7usu8rkoZQk66ylkqkHg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}