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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd18fcdd06dc5862b12419d6121f025863c0225a95f53c51ba35cc2725c16bd22' 
  AND token = 'OKA8Z/kQGzlh2soVrqLC6HyhnORRlqa6jqDjblb64jc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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