Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24dadb6ea3e7b2c407cd2ecd0ffbabecc7054f152ac3dbe697acc193bba9a25a' 
  AND token = '/kjm3A0FuEtWPMgzCiQnot/XaFKBB81K/ewQw4MzGoo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00086

JSON explain

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