Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07a846d56748b816d1ab24fc225de08d01db5fac2b784e94c94293474628204b' 
  AND token = '5BdFcb6mepCt2pZHdE2dACRT84yjL9ztP2v2LMGYt/I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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