Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b02316e8ad93510b30e6825eb74ce47e791deaba2027ba8f0658f59a52b707c7' 
  AND token = 'gmHBz13vyVneeRYdk6TbgdnZHSW9mlE0h/pp27Cya/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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