Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bc6745406e433c330ddcd816161e61272ce2835b16fb71ba4433d3e13261571' 
  AND token = 'g1b5KxWQvWTB9aIdQ/f8bpO1a3cKw5uZeJ2yYCad7Ok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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