Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2e22445c30ca4cd62f32d60b2c6dc8a96942c51c22800fad88418bc56cd214b' 
  AND token = 'cDgj858n5jO1wzSlxBPNvgIWuD7NLzGfm6eOvhhbMwo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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