Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af9f2bf2179d515b8adac630bf1825109bccb7ac479a884bcc5f7afd1948dd76' 
  AND token = '8pK+ZtcIZN+yF82FgmiNY7CDRe8huV76UQDiAKY9C2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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