Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cabc091984973c5d54595adef4572d499695afb7f5dfc8a232f7ee18640a4608' 
  AND token = 'cRbMo4+J1ZLofGkAnqzVysux1R/D15ftAcFVgFeMcvs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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