Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f381dbf288ced55950424ab6515b84a8bd194baab1bd881b90908ec2e2d42290' 
  AND token = 'zYhtODyunuFEBH+OWwNDKh4IdQI6ubTahwDoH528lR0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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