Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '22e853a24cd0d2e71c28651f86628a3d3113b62307af6c19f5ac884d91ce1dcb' 
  AND token = 'AufshRwc1J7hr5z8svAFdSlSigl75vmifROj9MdF/qI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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