Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd36215e8b4ed634965f946e2f33ba53c5434b34b3e219021cfa8e0aa8a7bc589' 
  AND token = 'adf4+qzoOXds6Qm+XeQa2fFateP7acT1+bj4ngefbug=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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