Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '75ac129ecdc7b7910e05a49aa5d954982dedc7efc39463142f8a00512cb350d2' 
  AND token = '3zG/nbMjBPIMP310c1TFn07O9k7Z4R0VwcDvoZX3Bqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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