Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f410a0cc670809ff72ff08c6c8c668f8eb58c886c29b0cf41e78c2fc5b89bc5' 
  AND token = 'zKXDC/1O87rkaU5mgQqeAoIswY1TZZ6gJQFEyYhdus4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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