Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e89d08632ddc10d606a3306c5f706be8714e677d5606a13e2492fc8733f36c8c' 
  AND token = 'QKgo+3n7T7+hhNTh2pwGDecae6wI+8brOkfXvy2RKEI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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