Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'df05e140d9c32d1b2f741c816342f42f7232210541905c0459b6b64d01252fdf' 
  AND token = 'xpHuwQOwCdeHgMfhm1gUDv8odehCJQI7x7bF1O/8pII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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