Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f66e3c36bf21c8ac2baca924162dc6880f3d6bfe10ec863ba638d217319decb1' 
  AND token = 'S8cAMWTW2m33hD9pE0O24YC1ZyS2ShTP+3Sb+x9GK/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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