Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5dd5e15a73a026fdf42becdd75116c01a8f548c9d3f0293073de7c9dbff4d07' 
  AND token = '6e1U6a1Gr7/9JRWeqs5utdC7RW8TvagIowZxkVJ5blI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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