Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '730d81607b9309607c4c0a8d899a4d17e30f9eead44da08700021ca02dca2dc6' 
  AND token = 'LNtyXvcvvclbfMxkuvXSE82Cd1AqAwH2dHX9ClhdD9s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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