Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '096631cbf8e65bab6cd436422fd589514014eae31ef99deee98b548cf133de03' 
  AND token = 'IfYkoY5V2iXkTKXn+FwnfyZlfzhYdYpgoQTKR0CXKz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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