Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '161b4410d1e5961d4c9efd351dcb7a0187516ead041449da7782de4c7f3c9b29' 
  AND token = 'yU7TDgfhXVVYR3jEfBIKLxe4s24FjZQmMevxootwf5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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