Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a18b3eefd41f00786b7690e46306f0c4d576b5cbc3305bf36ff1079feb0dc1b5' 
  AND token = 'odKYLfJvebCHOF8x3pP88CbYD/19pktvbB4LOTJl/8w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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