Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26980d6b5c305904fa97387e9fb0c3a8bf060dabc434e3296dad2bb6b10610fb' 
  AND token = 'WN8LiZ32LIcdsWbF763w9db6OPuetGyigTW19noe4ro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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