Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7cd39290e17b9a846106270756d4075e86e2fd23737ee950194d426737dd1b3' 
  AND token = 'o+MF4Z6xkKr1v0lXKYhu7SZb4M8I5raiOTP4mehI0dk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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