Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e930ac00a5b55850f162898da761ee17dff4a86a1ee4a762e5165983199e451f' 
  AND token = 'I3ul6A9/X0gY3iNHyRDpfR6ijJ1f35Areg+7Jte3fI4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

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