Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62be7d3e3616f0fa0a002e508fee9e767baa7a60036bb576719cb9e41dc89046' 
  AND token = 'zkDl0CCZ0JYiqCc0JLgI7kvmIXocuaijOBNZnSCK/r8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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