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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44ac8435b02df7520a9692748c534337e9ed4f9aef232d584b35f9ac060ae776' 
  AND token = 'jsIGScW01MAqCQhIxOnC1Yizi1fkO5HNevni7ZjjPY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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