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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7007e67b7259b832c95123e42582acc66793781894496f433758829918f96930' 
  AND token = '0EHeZq6SuXg0C1POnYRek0u6Oxy4H4tCc8Pglw7Nz0E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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