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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '40c1d5e4f087c74b4c31e2ce3d7554d098c904d83c189956bd929b366ce972cc' 
  AND token = 'P72RWS0GDnCo2yd2YrZRW7bZi7GLT4JWKmwIa700pF0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}