Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdd72917860c1d11537b68495b09f9b29ef1e32c6c91ab14b68047c71c8ad0f0' 
  AND token = 'Qnyg3EP57cUvOugVJulBV/iuh51UfkIwbGIMU6QQmsU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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