Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08067b66b71dfe092a9c153dcc735170b54600cb8df7b3624af6154f7bb8e0b2' 
  AND token = 'm4nFwQukXXWONOSMuOmpBCVpLe6iBTJY7oThidlqae0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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