Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '29cc47d2c812d283575d49aea67e7ede0ff7f67837c3974324228ae96d1534c7' 
  AND token = 'scusqSgasDpK7WyFF9ePiPNqiLyx+ihduhyZHGnciCk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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