Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60489ad7f398da25155108060274b6cfda94e1f303f027c2bd0b58d0fdd181cf' 
  AND token = 'q9nOc27E+di+V/Z+u0S7EKsdCaTMSybJ1oECriKDcSs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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