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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '022150a5119ee4cd20eb29e6251b4b5155fc1cad5ab0d7c4ca3e39f664a1244e' 
  AND token = '6/LEr1CXMuKWurfb05nzQukZsbM8fCEi46UaOTYX2RE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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