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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '219f264e1b2e7e946189df032cf655c564f2c6a693b9e896af5ec36371912fb4' 
  AND token = 'CnAioUvFjr/repEXRsoetirFlNS5OC/g5dJHdTjks/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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