Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '814523c83858f698e0a0ad0e20cccc2cd7217b8c32b7222c8c1ee6a4110ff528' 
  AND token = 'X4/wxsXQz23/I1msPBTIAeHavo40Rj/OH2JdR47uR3M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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