Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9366aad168eb3e40b39c183ac3a3d707e03a6bc1ce1640efdbc187742d4166b3' 
  AND token = 'QdRAx3T87/ELNnIIuUtbXeaYTJt/Ecz1CvEO53wqrFA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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