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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '111b6d2b3daf1ad0d3f4e437c85f5cbba1c901c25b59235ec1a3c3cb2cb687b6' 
  AND token = 'QJaUafIfal4Oc5hK+t3qhIumqb+xb6a1XobBD9HevVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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