Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4593993a87321044fde07fdad147d9e3a86fea4acd823b1f66b4be9996ae9e06' 
  AND token = 'Tf/DZfhDbzZ9taM2O+EPOjIsgok3i6QZBsPDznrTr44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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