Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '968e8acbfec65415e4b7ccf59495e3accefea1f07f7202c74f781e6ff5ceec5b' 
  AND token = 'JK1Bt3619jCby19eGP4BzqqU+mYGoLUuoipAUWTX2TA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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