Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5c017b5d96603e774259c1303e3b3b1e0612e1bd96c715d58587dc2a2fe1d6b' 
  AND token = 'TrsUcqeueFXKwc/V/T0W6L8inzcJarXxdQnAdY2PKkM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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