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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22fe9100aa022ef7633bc4dc7641e098107325878dff90dcc59cd8cf2f0fdd99' 
  AND token = 'iezeJi8zL311KgVxHYQOu7CIccF+Kq9o8kQivXs8fnA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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