Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ac0e5652fac9c7315fdb2e2a728d90c837730def51e23e4376e2db4351e6d5b' 
  AND token = '+gUvj/8yh9+GFo2mexY0dE+5G5Fugg8uREz5XR/MYFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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