Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57ab9f3908074d252c4cea40a34370a7b37f84f6737205f5e3b04deec40d6201' 
  AND token = 'gA1Eg+dqvuAfqozTZv5gi3WE6LhqBN+MI189aV9KA0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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