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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0eeada3e7911057c84f6a408c237d33f20a7800d374f44bdfb4332c9c6745602' 
  AND token = 'QsC4R7Zs6hQ5AR1bv7oXWKSj7gG5FErDt7S9ZAY2TWY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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