Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0692ffcba91020a1ddc708c5b562c1fc3c2ccf972f6cb8094740683750eb6d74' 
  AND token = '/BkzOOWBxFUIZb37HraOuHcz+8zrxngD0UtyYpIIOLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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