Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb840d153df191671c359b2e3284f27bc9d5866230ab7d26d4ead01711e61be6' 
  AND token = 'omfAPC2mZMKGR0rx5VPc8E5Nk5TBWXczhC9E4puziD0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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