Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc0f02a015f333cac43891d99c140ed18e3672916e83b3edc40b45b968732863' 
  AND token = 'rX72xz2OMfEsVtx2Eb4Ymb8vtTQ2JvLEQdE/GUWVZ0A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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