Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ea33c90fa26c34dbf24af18175f5085533884b5aec975a7956c1c79d0bc6ea1' 
  AND token = 'XAYKcMqjhMu5ilkORiEfy1fbtMKlzzYWLwpvcyTUn0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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