Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f86d6eec1777e34a58a861f416ed3821598f02ac36640d9f4f97f16377bbd884' 
  AND token = 'HatMkwyvOv/GW6RwQwDIWxnGw6mOxl0Z5KZOBUUIU94=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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