Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed8f52e23c6a289daa4a5835c8cccd906284c34dc1ac0239df6db49d38ce95e1' 
  AND token = 'sEJvSiXHD0JT2a4HE1pKUAyIAporbaNvKmgI1RQKiNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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