Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '943d1534044eafb34b93a8caa1954f2380090e084179b2810f78521334149164' 
  AND token = '0Khdzc/+lvjyevAV7YowxRF+xE4HSqfM0S+ZoA4iCnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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