Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b0ca7fafcf07aadf5506f3a0b288bef19c90e620f770bee92125a2f77e87683' 
  AND token = 'SCdGwOC4vJZigxk4G6+wlx6mG/IyDenbz4CbzSFYkuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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