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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f024956c7dc2a1d046d7d9525ab14343bd9cd04a78e6215e9780865e4d3c7a46' 
  AND token = 'fVxfl7G2mNSJa7aTpMnJ6mGYBXSe6cQ7xbP2LIhIpXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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