Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '61e18e74aae2eb8d4a475b74ced0a30c9fef0da3c022edd83b6abe9fa56afb87' 
  AND token = '8V33XkJ1POoRmNPK+KV/fF7fnMJwD8KGPYCZrbiYrGs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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