Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e49a2a94cc7828e7716987236145101877c0db9b58daa5c676942b771eb0368d' 
  AND token = 'kUY82O0PelLijaqSBWeJWruooNqRxyovUTeNeMuaPCc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}