SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c62cd970242c8c31103279d6dc1cbbe3f886ba7405183c478e54c89f12faa641' 
  AND token = 'NIpLpQgIA+/iMuQ0a/KO7ygZoSz7Vu7IlYzfRoLaLpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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