Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07d9eb3fb3c1973f534cf34e88efbf1a7e342cae01df9c065976dbb5a3d513b4' 
  AND token = 'xox9u7sS2pqN1A/p4jSzrjXY/GKyPLtwyRhcJEow5Ao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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