Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0b79b55a51e69e8eb3fad9d64f7e98c8611e01bba0ec43dda52bc191691ebb8' 
  AND token = 'etzIWA7R6mL6sLf43X9YJ35ow6036ZIvp4BgO8JdM4w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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