Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '382c352f9a24fc78bdd00e8c12a0de6a95d952ff6b24fb0b3434ebbe6e9e3ebb' 
  AND token = 'sDuN/hySfzTGle4sUjU65HIbcPtZqVn0sJsomh8M/Nk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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