Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48933223841385d42e8a2f33d370433dbd8facae50f57cd86bd6271be24da95b' 
  AND token = 'R3s5btsJjJ+ohbxwoAaaQcW+Hl1J66vt/J0BtIfF4nE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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