Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '949c72cd17b9f7e37f3cfbcdfcbc6f699f007dff9d43c8a513fc7443dccae626' 
  AND token = 'vjuoDdQOuAheR2IJIz+YVQU2rEjYXRNNi2PJmcRvjC0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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