Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '126bb72bb0bd2630485fbf07cda41bb527a401994b2c58af39a9c5c0c59d0f32' 
  AND token = 'dOmohrJYSaCbcjcq5jhw3I+wzgtgA4t+8fH4vg55RAk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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