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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc3deec180ce703d18886e8c6abe6ceb368be98f1fb4886b823fe9cd0d39e509' 
  AND token = '4glqtX/Xfxzkj+dM652c/m37EFnq6Wzc8QlBYcxJhvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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