Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '103b984d068b966cbf78f6d8f23f72571ea3818ed36e81e31050379ee07b1a42' 
  AND token = 'TuhtLtfhRK45iyOomdggDK5DV+ESxsYEyQHfniNZ+1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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