Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea008b1deb40beb7d663ba3bd0556b1b6cd9f9d39efb1cea22444d8645f41ed1' 
  AND token = 'OfQIVzfCRbERfhtHI0crTAFqhFKutU6mS0qa371pzu8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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