Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7504c56b6177d87bcd1e24e442deb942862714e5e3b8842b1c2bb26b3a2a2d66' 
  AND token = 'GgdD04nQPimhORQ7wE0nZvMkCqGII7jLgdSzUJTtoMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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