Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5daaa904dabde2c851199dca00b4fae2b4082d09efe4a6edd9715d85186168bc' 
  AND token = 'wS+t3FSrnwiM/TU/CJPPYu1fZN5n8Dbd+Ue7uU4OCps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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