Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ab96532e9a994aff71fb9b5df340098b18abb08f96e7844c0c33d2f3524a13c3' 
  AND token = 'Rvbyzr0AgHhJFuZdQya1u2i2sw6enfBBK81Ee8HgsuQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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