Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e431e092cce88f0ec5e22835fdc28c6c95701ec1003112cccbd95a6856f0389e' 
  AND token = '5z1BnhF4+OrAvnW1BGP76vGfDG8//tfZXK7cQm989Tg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00078

JSON explain

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