Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ff27485bd63b9c552eb960b4a947998210586d0e58bc97acb4b4010304dc88ca' 
  AND token = 'xZI1MulwRodKT5HIZJDhCJ2FvEvW/3yJ3rS8a0hSvHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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