Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53638ed0cba0ddcbd75e472f99a0ec6de6c6983e9f25c9894d2443a58ec079ee' 
  AND token = 'VZGFryVlsgSUluSzzzWMeG2zY8KGIvmPGpV7N49s6DI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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