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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a2eb0d3180e845b188e0a38297c5445d259b92cae4923445655e613e4110364' 
  AND token = 'ncML/shUZf7zbrGiVPXsb5A59dGc2LIU/JJ+HKoUffw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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